Computing in KTeV

There are two computing clusters for KTeV, one for online use and
one for offline use.

The online cluster is located at KTeV Hall and consists of the
following machines:

ktev1: An SGI Challenge L machine with 12 200 MHz R4400 processors.

ktev2: An SGI Challenge L machine with 12 200 MHz R4400 processors.

ktev3: An SGI Challenge L machine with 10 150 MHz R4400 processors.

ktev4: An SGI Challenge L machine with 6 194 MHz R10000 processors.

atev1: An SGI Indy machine.

atev2: An SGI Indy machine.

atev3: An SGI Indy machine.

The SGI Challenges are used for filtering data online (the level 3 trigger)
during data taking and should NOT be used for personal computing without
permission. The SGI Indy's are used for the slow DAQ and for software
control of the trigger and other experimental configurations.

The offline cluster is located on the first floor of the Feynman Center, and
consists of the following machines:

kpasa: A DEC 8400 server with 10 CPUs.

ksera: A DEC 8400 server with 10 CPUs.

klik: A DEC 4100 server with 4 CPUs.

klak: A DEC 4100 server with 4 CPUs.

The kpasa cluster is the KTeV offline analysis cluster. Usually
E832 analysis is done on kpasa and E799 on ksera. klik and klak
are new additions and also available for use. The systems are
managed by the KTeV offline computing group which meets each Tuesday
morning at 10:00 am in WH13W or by phone. The KTeV/CD server meeting
is held every second Wednesday at 10:30 am in FCC3.

The new RAID arrays have been purchased and the first unit is in test
on KLAK. KLAK will remain in test mode until these test are complete.
Please contact the current
KTeV offline contact if you have questions.

System administration issues for the ktev offline cluster should
be addressed to
ktevoff-admin.

How to get an account on KTeV machines

Anyone doing KTeV analysis tasks can get an account on the KTeV offline
cluster. In order to get an account on the KTeV online cluster, you have
to convince someone that you are writing online code and can only do it
on the online cluster. This could be difficult.

The first step in getting an account is getting a Fermilab UNIX computing
ID number, a UID. This is not a Fermilab ID. If you already have an account
on a Fermilab UNIX machine (i.e. fnalu, cdfsga, etc.) then you have a UID
and you don't need to get one. If you don't have a UID, then fill in this
form . Near
the bottom of the form, choose UID only.

Once you are assigned a UID (or if you already have one) then email
mcbride@fnal.gov to request the
account.